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Chryseobacterium formosus sp. nov., a bacterium isolated from an ancient tree trunk
Shahina Akter1, Hien T T NGO, Juan Du
1Department of Oriental Medicinal Material and Processing College of Life Science, Kyung Hee University, 1 Seocheon, Kihung, Yongin, 446-701, Gyeonggi-do, Republic of Korea.
Archives of Microbiology
|July 27, 2015
Summary
A novel bacterium, Chryseobacterium formosus, was discovered on an ancient tree trunk. This Gram-negative bacterium expands the known diversity within the Chryseobacterium genus.
Area of Science:
- Microbiology
- Bacteriology
- Taxonomy
Background:
- The genus Chryseobacterium comprises Gram-negative bacteria with diverse ecological roles.
- Characterization of novel bacterial species is crucial for understanding microbial diversity and evolution.
Purpose of the Study:
- To isolate and characterize a novel bacterial strain from an ancient tree trunk.
- To determine the taxonomic position of the novel isolate within the genus Chryseobacterium.
Main Methods:
- 16S rRNA gene sequence analysis for phylogenetic placement.
- Polyphasic characterization including DNA G+C content, isoprenoid quinones, fatty acid profiles, and polar lipids.
- DNA-DNA hybridization for species delineation.
Main Results:
- Strain THG-DN3.6(T) was identified as a Gram-negative, non-motile rod.
- Phylogenetic analysis placed the isolate within the genus Chryseobacterium, closely related to Chryseobacterium indoltheticum.
- DNA-DNA relatedness between strain THG-DN3.6(T) and C. indoltheticum LMG 4025(T) was 52 ± 0.5%, supporting its status as a new species.
- Distinct chemotaxonomic features including major fatty acids and polar lipids were identified.
Conclusions:
- Strain THG-DN3.6(T) represents a novel species of the genus Chryseobacterium.
- The proposed name for the novel species is Chryseobacterium formosus sp. nov.
- The type strain is THG-DN3.6(T) (=KCTC 42606 = CCTCC AB 2015118).
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